RNS Number:9219M
BHP Billiton PLC
30 June 2003


Date                 30 June 2003
Number               23/03


 BHP BILLITON ANNOUNCES OIL DISCOVERY WITH CHINOOK E-WELL IN DEEPWATER GULF OF
                                     MEXICO


BHP Billiton today announced that it has made an oil discovery at its second
exploratory well on the Chinook prospect in the ultra-deepwater Gulf of Mexico.
Drilled in water depths of approximately 8,830 feet (2,684 meters), the well
exceeded a total depth of 27,650 feet (8,406 meters), encountering a gross
hydrocarbon column of 620 feet (188 meters) with 260 feet (79 meters) of net oil
pay.

The Chinook discovery is located more than 300 kilometers (180 miles) from the
Louisiana coast in Walker Ridge Block 469, approximately 30 kilometers (19
miles) south of the previously announced Cascade discovery.

Steve Bell, President of Exploration and Business Development for BHP Billiton
Petroleum, said today: "This is a very encouraging result on a large structure.
Of course, it is early days and the result must be seen in perspective. While
this is the deepest penetration to date on Chinook, we must have more appraisal
data before we can be definitive about the scale of resource. Importantly, this
strengthens our inventory of BHP Billiton-operated discoveries in the area. With
Shenzi, Cascade, Neptune, and Vortex, we have a full appraisal programme in
place to evaluate and, if successful, create more value by ultimately
commercialising these hydrocarbon accumulations."

Drilling on Chinook-3 began January 13, 2003, using the BHP Billiton operated
drillship C.R. Luigs. BHP Billiton owns a 40 percent interest and is the
designated operator of Chinook with Petrobras owning a 30 percent interest, and
Total and Amerada Hess each holding a 15 percent interest.

BHP Billiton holds interests in more than 340 blocks in the Gulf of Mexico,
where the company is actively exploring for oil and gas. Deepwater projects
sanctioned for development include the Atlantis and Mad Dog oil and gas fields,
in addition to producing assets at Typhoon and Boris. In the past year the
company has announced discoveries at Cascade, Shenzi, and Vortex, all of which
are located in deep- and ultra-deepwater blocks.


Further information on BHP Billiton can be found on our Internet site: http://
www.bhpbilliton.com


Australia                                                     United Kingdom
Andrew Nairn, Investor Relations                              Mark Lidiard, Investor & Media Relations
Tel: +61 3 9609 3952 Mobile: +61 408 313 259                  Tel: +44 20 7802 4156
email: Andrew.W.Nairn@bhpbilliton.com                         email: Mark.Lidiard@bhpbilliton.com
Tania Price, Media Relations                                  Ariane Gentil, Media Relations
Tel: +61 3 9609 3815 Mobile: +61 419 152 780                  Tel: +44 20 7802 4177
email: Tania.Price@bhpbilliton.com                            email: Ariane.Gentil@bhpbilliton.com
United States                                                 South Africa
Francis McAllister, Investor Relations                        Michael Campbell, Investor & Media Relations
Tel: +1 713 961 8625 Mobile: +1 713 480 3699                  Tel: +27 11 376 3360 Mobile: +27 82 458 2587
email: Francis.R.McAllister@bhpbilliton.com                   email: Michael.J.Campbell@bhpbilliton.com


BHP Billiton Limited ABN 49 004 028 077                 BHP Billiton Plc Registration number 3196209
Registered in Australia                                 Registered in England and Wales
Registered Office: 600 Bourke Street Melbourne Victoria Registered Office: Neathouse Place London SW1V 1BH United
3000                                                    Kingdom
Telephone +61 3 9609 3333 Facsimile +61 3 9609 3015     Telephone +44 20 7802 4000 Facsimile +44 20 7802 4111

              The BHP Billiton Group is headquartered in Australia


                      This information is provided by RNS
            The company news service from the London Stock Exchange
END

MSCIIFFRRRIIVIV